Method for Selecting Packet Processing Function and Device Therefor

1. A network entity device, comprising: a processor; and memory storing instructions thereon, the instructions when executed by the processor cause the processor to: collect, in real-time, state information of a communication interface formed between a control plane device and each of one or more packet processing devices in a wireless communication network, the control plane device separate from a user plane device and implementing at least one of an access and mobility function (AMF) associated with mobility management, a session management function (SMF) associated with session management or network functions (NFs) associated with sharing network-related information with an external management plane; determine signal quality of the communication interface for each of the packet processing devices based on the state information, the determined signal quality indicative of transmission efficiency of each of the packet processing devices with respect to the control plane device; select any one of the packet processing devices having a highest transmission efficiency with respect to the control plane device; and output selection information of a selection of the one packet processing device.

2. The network entity device of claim 1 , wherein the state information indicates at least one of a type, a speed, a latency, or a load of the communication interface for each of the packet processing devices.

3. The network entity device of claim 1 , wherein the instructions further cause the processor to collect additional state information of other communication networks connected to the packet processing device, and select the one packet processing device by further utilizing the additional state information of the other communication networks.

4. The network entity device of claim 1 , wherein the state information is collected when a measurement of the state information of the communication interface is requested by the control plane device implementing the network functions or when a user equipment accessing a base station in the wireless communication network is recognized.

5. The network entity device of claim 1 , wherein the instructions further cause the processor to perform a filtering procedure on the packet processing device based on requirement from predefined service and user policy.

6. The network entity device of claim 1 , wherein the the instructions further cause the processor to make a comparison of the state information of the one packet processing device with the state information of a preset packet processing device, and to determine whether to output the selection information according to a result of the comparison.

7. The network entity device of claim 1 , wherein the instructions to further cause the processor to measure the state information of the communication interface for each of the packet processing devices.

8. The method of claim 1 , wherein the selecting comprises: performing a filtering procedure on the packet processing device based on requirement from predefined service and user policy.

9. A method performed by a network entity device for selecting one of packet processing devices, the method comprising: collecting, in real-time, state information of a communication interface formed between a control plane device and each of one or more packet processing devices in a wireless communication network, the control plane device separate from a user plane device and implementing at least one of an access and mobility function (AMF) associated with mobility management, a session management function (SMF) associated with session management or network functions (NFs) associated with sharing network-related information with an external management plane; determining signal quality of the communication interface for each of the packet processing devices based on the state information, the determined signal quality indicative of transmission efficiency of each of the packet processing devices with respect to the control plane device; selecting any one of the packet processing devices having a highest transmission efficiency with respect to the control plane device; and outputting selection information of a selection of the one packet processing device.

10. The method of claim 9 , further comprising: measuring the state information of the communication interface for each of the packet processing devices.